ae ee res eee, ee en oe eh era Saw ee 
2 mm. long, 
- short 
oF 
@ # 
usually cuspidate or aristate with 
140 a BRYOLOGY OF NEW ZEALAND. 
and are, indeed, somewhat intermediate between those and the European 
plant. Even so, however, they are markedly larger than in the latter, and 
I think the plant is probably quite entitled to specific rank, 
It is, I believe, known only from Colenso’s unspecified station in the 
North Island, and Reader’s still less exactly defined locality in “ New 
aland.” 
Tortuna Hedw..- 
This genus as now accepted represents the highest development of 
Pottieae, even as Barbula does in Trichostomeae. The plants are often 
excurrent, rather large upper cells and Jax, pellucid rectangular basal cells, 
the cylindrical capsule and long twisted peristome, often with a very long 
basal tube. 
The following will serve partly as a guide to the systematic position and 
partly as a key to the species 
§ Tortula sensu stricto Limpr. 
te, oblong or oblong-lanceolate, about 
Plants small, stems short. Leaves small, ovate, 
y 3mm. ; capsule small, elliptic or shortly cylindric ; tube of peristome 
1, § Leaves longly piliferous, nerve not thickened above fe -. 4. muralis. 
* Nerve excurrent in a very short mucro .. 5 vs “s 2 
9. { Nerve stout, not thickened above a se eo ee Sie 4 
* ) Nerve distinctly thickened near apex .. os “e 5 es 3 
9 § Margin recurved, spores 18-21 u ee os = -- |.. atrovirens. 
"* { Margin plane, spores 12 » a : 2. submutica. 
(Leaves usually narrowed at apex, nerve excurrent in a minute hyaline apiculus 
J 3. phaea. 
| Leaves minute, broadly obtuse at apex, nerve excurrent in a thick, truncate 
mucro .. ne a s re xs 14. abruptinervis. 
§ Zygotrichia Brid. 
Stem short. Leaves more or iess spathulate, cuspidate (in the only New Zealand 
species strongly bordered) ; tube of peristome long. 
Leaves with a strong white border, toothed near apex... 5. Petriei, 
§ Syntrichia Brid. 
Plants usually robust with elongate stems. Leaves large, mostly 3 mm. or longer, 
th the excurrent nerve. Tube of peristome long. 
l ¢ Leaves more or less toothed above v3 
* ) Leaves entire ne <i vi s = ve ie 4 
( Nerve papillose at back ee Ss pe fe os 8. rubra. 
es i Nerve smooth at back a3 ee om ae tp es 3 
